Smoke-recording apparatus.



R. L. EDDY. SMOKE RECORDING APPARATUS.

APPLIOATION FILED APR. 2a, 1909.

971,670. Patented Oct. 4, 1910.

2 SHEETS-SHEET 1.

R. L. EDDY. SMOKE RECORDING APPARATUS.

, APPLICATION FILED APR. 28, 1909. 971,670. Patented Oct. 4, 1910.

2 SHEETS-SHEET 2.

0777758856 lhVE/YTUR UNITED STATES PATENT @FFIfiE.

SMOKE-RECORDING- APPARATUS.

Specification of Letters Patent.

Patented Oct. 4, 1910.

Application filed April 28, 1909. Serial No. 492,797.

tended to make records of the amount of smoke or coloring matter inchimney gases, may be employed for a variety of purposes. For example,by submitting the chart sheet to chemical treatment, the same may beprepared to receive a record of certain con.-

stituents sometimes found in commercial gases, etc.

I attain the objects of my invention by the use of the means andmechanism illustrated in the accompanying drawings, in which likefigures refer to similar parts throughout.

Figure 1 is a side view or elevation of the entire machine. Fig. 2, is atop view of the machine, certain of the parts, viz. the chart drum andpump cylinder, being shown in section and certain other parts beingshown, broken away. Fig. 3 is a view of one of the pedestals employed tosupport the. shaft carrying the chart drum. Fig. 4 is a view of anotherpedestal employed for the same purpose. Fig. 5 shows front and sideviews of a pedestal employed to support a nozzle through which the smokeis ejected against the chart, andv a perforated shield interposedbetween the nozzle and the chart. Fig. 6 shows certain details ofthepedestal illustrated in Fig. 4 and of the gearing means employed forcommunicating motion to the shaft carrying the drum. Fig. 7 showsdetails of the nozzle and shield referred to. Fig. 8 is a view of a tyical chart. Fig. 9 is a cross-section View 0 a revoluble timing shieldFig. 10 is an end view of the chart drum. 1

In Fig. 1, the numeral 1 indicates a'motor employed to drive themachine. This motor may be of any type preferred. A gear wheel, 2, isrigidly fixed t0 the shaft of the motor and meshes with the gear wheel,3. A connecting rod, 4, communicates'motion from 3 to the piston, 5,which'plays in the pump-cylinder, 6. The .smoke receiver, 7, isconnected with the cylinder, as shown and the liquid, 8, preferably oil,normally fills 7 to the point X or thereabout. On the forward thrust ofthe piston, the oil is drawn into the cylinder from the smoke receiver,the level falling to about the point, y. On the reverse stroke of thepiston, the ,leVel of the oil again. rises to X The oil serves thepurpose of a liquid piston for the smoke receiver or pump, 7 and alsooperates to entrap any foreign matter, such as cinders and'ash thatmight flo'at in the chimney gases and tend to cut the piston andcylinder, 5 and 6. The foreign matter so entrapped in the oil, settlesto the bottom of the smoke receiving vessel and accumulates at 7*. Theoil, when desired, may be drawn off by means of the plugged vent, 9. Thepipe, 10 leads to the chimney or other source from which it is desiredto draw the smoke or gas. The check valve, 11 is intermediate betweenthe smoke receiver, 7, and the pipe 10 and the check valve, 12, isintermediate between 7 and the nozzle, 13. The arrangement is such thaton the forward stroke of the piston, valve 11 opens and valve '12closes, while the opposite valve operations occur on the reverse strokeof the piston. The connecting rod, 1 1, is connected with the crank, 15and the link, 16. The timing shield, 17, is revoluble on the pin, 18.The pawl 19, engages the teeth, 20 on the periphery of the timing shield17. The pawl, 21, is held in contact with 17 by the spring, 22. Theelongated aperture, 23, in the timing shield, 17 may be closed to anydegree desired by the adjustable shutter, 24. The shield, 25, isinterposed between the timing shield 17 and the chart drum 4.5. A smallhole, 41, Fig. 7, is drilled in 25, exactly opposite the orifice, 13 ofthe nozzle, 13. Shield 25, is supported by the arm, 26.

. A clock mechanism, 27, drives the cogged wheel, 28. The shaft 29,which supports the chart drum, 4:5, is slidably journaled in thebearing, 34, of the pedestal, 39. The shaft is provided with a drivingscrew, 30 as shown. The end, 31, of the shaft, 29, is turned down toform a slight shoulder at the point, 32, where the driving screw 30,begins. A longitudinal key-way, 33, is provided throughout the length ofthe driving screw, 30. The gearwheel, 28 is provided with a key 35,which is freely movable in the keyway, 33. Wheel 28, is slidably mov-34", Fig. 4, is cut in the bearing of the l pedestal, 40. This screwengages the drivable over the driving screw, 30. A screw,-

any

ing screw, 30. The arrangement is such that as the gear wheel 23, isrevolved by the clock or other driving mechanism employed, the shaft 30,is revolved through the agency of the key 35 and the key-way, 33. Thedrum, 45, revolves with the shaft. The shaft is given a lateral movementby means of the screw, 30, which is in engagement with the screw, 34.The drum, 45, is accordingly given a compound movement, being caused torevolve with its shaft and moving laterally with it. The nozzle, 13, isheld by the clamps, 37* and 37 which are supported by the pedestal, 36.The screw, 38, holds the. clamp, 37. The drum,'45, is supported upon theshaft, 30, by means of the spider, 46. The bearing, 47 permitsadjustment of the drum upon the shaft by means of the set screw 48. Thestuds, 49? and 49 on the inter ior of the drum, are drilled and tappedwith right and left threads to receive the screws,.50 and 50". By meansof the button, 51, the screws may be operated to open or close theopening, 52. The arrangement facilitates placing the chart sheet upon orremoving same from the drum. The chart sheet, 42, may have the hours ofthe day or other arbitrary divisions of time, 43, printed upon it. Therecords will appear upon the chart in a series of discolorations, 44,thedegree of the discoloration indicating the quantity or percentage of thesmoke existing. The nozzle, 13, has a very small aperture, 13*. Thesmoke is forced through this aperture by the action of the pump andimpinges against the timing shield, a record being made only when theaperture 23 in the timing shield is opposite the discharge nozzle. Thelength of exposure of the chart to the jet of smoke may be regulated bythe shutter, 24. One record'will be made for each complete revolution ofthe timing shield, while several operations of the pump may take placefor each such revolution. This arrangement permits of a rapid operationof the pum and also insures that each record will be distinct from everyother.

It is essential that the smoke be delivered I against the chart in afine stream, otherwise the coloring matter will spread more than isdesired and the records will not be distinct. As the nozzle must be atsome distance from the chart, relatively speaking, owing to. theinterposed timing shield the use of the shield 25, is renderednecessary. This shield is placed in very close roximity to the chart.The smoke is d "ven against it from the nozzle and a fine stream passesthrough the aperture, 41 and against the 'chart sheet, such coloringmatter as exists in the smoke being deposited upon the chart.

The shaft carrying the drum may be lifted from its bearings. Thisprovision in connecmake it possible to start the series of records atany point upon the chart desired. When the screw, 30, leaves thescrew-bearing, 34", the lateral movement of the drum and its shaftceases.

The operation of the machine will require little further explanation.The gases are drawn into the smoke receiving chamber on the forwardmovement of the piston, 5, and expelled through the nozzle, 13, when thereverse piston operation occurs. The features of adjustment have alreadybeen sufficiently described.

Having now fully illustrated and described my invention, what I claim asnew and desire to secure by Letters Patent is as follows:

1. A smoke recording apparatus consisting ofa pump and means foroperating thesame; a movable chart-carrying mechanism; avalve-controlled passage leading from the; pump to the source of smokesupply, and a valve-controlled passage leading from the pump to a pointnear said chart-carrying mechanism. 90

2. A smoke recording apparatus, consisting of a pump and means for,operating same; a chart carrying mechanism; a tube leading from thesource of gas supply to said pump and from said pump to near said chartcarrying mechanism and suitable valve means for insuring a flow of gasin one direction'thr'ough said tube. y

3. A smoke recording mechanism, consisting of a pump cylinder and meansfor operating a. piston therein; a tube leading from the source of smokesupply to said cylinder and from said cylinder to a. movable chartcarrying mechanism and valvular means for insuring a flow of gas fromthe source of supply through said tubes when said pump is beingoperated. p

4. A smoke recording mechanism, consisting of an aspirating device andachart carrying mechanism; a tube leadlng from the source of smokesupply to saidaspir'ating device and from said aspirating device to near:said chart carryin mechanism, and means for operating sai aspiratingdevice and moving said chart carrying mechanism. 1 5. A smoke recordingapparatus, consisting of a cylindrical, piston pump connected with avessel containing a liquid; a tube having a valve therein and leadinfrom the source of smoke supply to said %iquid con- 9 taining vessel; achart carryin mechanism and a tube containing a valve Teadingfrom saidliquidcontaining vessel to said chart carrying mechanism.

6. A smoke recording apparatus, consisting of a cylindrical, pistonpump, connected with a vessel containing a liquid; a tube having a valvetherein leading from the source of smoke supply to near the top of saidvessel; a revoluble drum, adapted to 130 carry a chart and a tube havinga valye therein, leading from the upper part of said liquid containingvessel to near said chart 'foroperating same; a movable chart carryingmechanism and mechanical means for operating same; a vessel having aliquid therein and connected with said pump; a tube leading from thesource of smoke supply to the upper part of said liquid containingvessel; a tube leading fromthe upper part of said liquid containingvessel to near said chart carrying mechanism and havlng a smalldischarge orifice adjacent thereto and directed thereatv and valvularmeans in said tubes for insuring a flow of gas from said source ofsupply through said tubes and to said orifice,

8. A smoke recording mechanism consisting of an aspirating device and achart carrying apparatus; means for operating both; a tube leading fromthe source of smoke supply to said aspirating device and from saidaspirating device to near said chart carrying mechanism; valvular meansfor directing a flow of gas from said source of supply through saidtubes; means for directing a jet of said gas from said tube against thechart carried by said apparatus and means for fixing the time that saidjet of gas shall play against said chart.

9. A: smoke recording apparatus consistingof an aspirating device and achart carrying mechanism; mechanical means for op erating same; a tubehaving avalve therein, and leading from the source of smoke supply tosaid aspirating device; a tube leading from said aspirating device tonear said chart carrying mechanism and having a relatively minutedischarge'orifice, and a mechanically operated shutter, interposedbetween said discharge orifice and said chart carrying mechanism.

10. A smoke recording apparatus, consisting of an aspirating device anda chart carrying mechanism; mechanical means for operating same; a tubehaving a valve therein, and leading from the source of smoke supply tosaid aspirating device; a tube leading from said aspiiating device tonear said chart carrying mechanism, said tube having a relatively smalldischarge orifice; a mechanifially operated sh'utter interposed betweensaid orifice and said chart carrying mechanism, said shutter having anelongated slotted opening therein opposite to said discharge orifice.

11. A smoke recording apparatus, consisting of an aspirating device anda chart carrying mechanism; mechanical means for operating same; a tubehaving a valve therein, and leading from the source of smoke supply tosaid aspirating device; a tube leading from said aspirating device tonear said chart carrying mechanism, sald tube having a relatively smalldischarge orifice; a mechanically operated shutter interposed betweensaid orifice and said chart carrying mechanism; an elongated slottedopening in said shutter opposite to said discharge orifice and means forshortening the length of I said slotted opening.

12. In a smoke recording device consisting of an apparatus for directinga stream of gas upon a movable chart, the combination therewith of a'shutter or shield operated by mechanical means and interposed betweenthe chart and the orifice through which the gas is directed againstthechart.

13. In a smoke recording device consisting of an apparatus for directinga stream of gas upon a movable chart, the combination therewith of ashutter orv shield, operated by mechanical means and interposed betweenthe chart and the orifice through which the smoke is directed againstthe chart, an elongated slotted opening in said shield and means foradjusting the area of said opening.

14. In a smoke recording apparatus, consisting of a device for directinga stream of gas upon a movable chart, the combination therewith of ashutter or shield, operated by mechanical means and interposed betweenthe chart and the orifice through which the smoke is directed againstthe chart, and a secondary shield having a minute opening therein andinterposed between said first mentioned shield said chart.

15. In a smoke recording apparatus consisting of a device for directinga stream of gas upon a movable chart, the combination therewith of asuitable mechanically operated shutter device for causing said stream ofgas to play intermittently upon said chart.

16. A smoke recording apparatus comprising a pump and means foroperating the same, in combination with a chart-carrying mechanism andmeans for operating the same; a conduit leading from the pump to thesource of smoke supply; a valve in said conduit; a conduit leading fromthe pump to the point of passage near said chart-cargy ng mechanism, anda valve in said con- 17. Ina smoke recording apparatus consisting of adevice for directing a stream of gas upon a movable chart, thecombination therewith of, a chart carrying mechanism, consisting of arevoluble drum; a screw upon the shaft carrying said drum; a threadedbearing for said screw; a longitudinal key-way throughout the length of'said screw; a mechanically driven wheel loosely journaled upon saidscrew and having a key fitting into said keyway.

18. A smoke recording apparatus includ- 1 was:

ing a chart carrier, a pump for drawing gas ceptacle and discharge itagainst the recordcarrying smoke from the source of supply, ing device.

a tube having a small nozzle opening near In witness whereof, I havehereunto subsaid chart carrier and connected with said scribed my namein the presence of two wit- 5 pump, means for operating said pump andnesses.

for interposing a shield periodically between said nozzle and a chart.

19. The combination with a smoke recep-. In the presence oftacle of arecording device, pipes and a Jos. W. HAYs,

RAY L. EDDY.

' .0 pump adapted to draw smoke out of the re- C. G. FLAOK.

